What are the Types of Integration Testing

Big Bang Integration Testing: In this type, all the modules of the software application are integrated simultaneously and tested as a whole.

Top-down Integration Testing: In this type, the higher level modules are tested first followed by the lower level modules.

Bottom-up Integration Testing: In this type, the lower level modules are tested first followed by the higher level modules.

Sandwich Integration Testing: In this type, the integration testing is done by combining the top-down and bottom-up approaches. The modules are integrated in small groups and tested before integrating them into larger groups.

Functional Integration Testing: In this type, the focus is on testing the functionality of the modules and their interactions with each other.

Non-functional Integration Testing: In this type, the focus is on testing the non-functional aspects of the software application such as performance, security, scalability, etc.

Regression Integration Testing: In this type, the focus is on testing the previously integrated modules again after changes have been made to ensure that the changes have not affected the existing functionality